I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I’m tall when I’m young, and I’m short when I’m old. What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

what does the below rebus mean?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title